Timing chain, sprockets and tensioner - examination and renovation

1 Examine alI the teeth on the camshaft and
crankshaft sprockets. If the teeth are “hooked”
in appearance, renew the sprockets.

2 Examine the chain tensioner plastic
sprocket for wear. If excessive wear is
evident, the complete tensioner assembly
must be renewed, as the sprocket cannot be
renewed independently. Note that the
tensioner plunger assembly must be renewed
whenever the timing chain is removed.

3 Examine the timing chain for wear. If the
chain has been in operation for a considerable
time, or if when held horizontally (rollers
vertical) it takes on a deeply-bowed
appearance, renew it.

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